SOLUTION: Convert to decimal notation. 8.83 * 10^7. I came up with this: 0.00000883 since the answer is 88300000. Is this correct? Question 2. How do I evaluate the polynomial for x= -2

Algebra ->  Decimal-numbers -> SOLUTION: Convert to decimal notation. 8.83 * 10^7. I came up with this: 0.00000883 since the answer is 88300000. Is this correct? Question 2. How do I evaluate the polynomial for x= -2      Log On


   

Question 330627: Convert to decimal notation. 8.83 * 10^7. I came up with this: 0.00000883 since the answer is 88300000. Is this correct?
Question 2. How do I evaluate the polynomial for x= -2? The equation is 2x^2-5x+1. When x= -2, 2x^2-5x+1 equals ?
Found 2 solutions by Alan3354, Fombitz:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Convert to decimal notation. 8.83 * 10^7. I came up with this: 0.00000883 since the answer is 88300000. Is this correct?
10^7 = 10,000,000
8.83*10000000 = 88300000
0.00000883+=+8.83%2A10%5E-6
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Question 2. How do I evaluate the polynomial for x= -2? The equation is 2x^2-5x+1. When x= -2, 2x^2-5x+1 equals ?
2x^2-5x+1
sub -2 for x
= 2*(-2)^2 -5(-2) + 1
= 8 + 10 + 1
= 19

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Is it 10^7 or 10^(-7)?
Your explanation is a bit confusing.
If it's positive 7 then it's like multiplying by 10000000, 88300000.
If it's negative 7 then it's like multiplying by 10000000, 0.000000883.
.
.
.
Substitute (-2) wherever you see an x.
f%28x%29=2x%5E2-5x%2B1
f%28-2%29=2%28-2%29%5E2-5%28-2%29%2B1
Work that through and you'll have your answer.